Great ideas/info from all!
My lunging lasts around 5-10min. I let her blow off steam both ways for a few laps, then hook up the side reins. She stays out at the VERY end of the line, and when i canter her, i walk a circle myself to let her circle be bigger. I’m lucky to get time to work her 2 or 3 times a week right now until the days start getting longer. Not enough to do squat, i know! Its frustrating.
I have a wonderful piece of property that is very inviting to take off in a nice canter/gallop… Hole free, flat, 7acres in the front where i ride… So having a good spot to let her go and find herself is available… BUT, i had a miserable pregnancy and didnt ride from March - Dec… “I” do not feel comfortable just yet in letting her go. I’ve come back braver than i have been in years, mentally i dont mind, but seat wise, i dont think i’m really ready for it, if she were to be silly at all, i might just plop off the side!
I have an older horse i’m trying to get myself “back together” on, but he’s a jumper/x-eventer. His canters are also a bit hair raising and another issue altogether that i have been getting advice from the jumper people to get some insight on how the heck he was trained… Slowly but surely, i am getting my seat together, but with 2-3 rides a week, i’m not sure how long its going to take me to feel really comfortable to let my mare go in an open space.
My arena is not fenced in, so technically, it could quickly become an open space that we jet off in as well! But she semi knows the drill that arena work is done in the arena.
I do not have a truck right now to take her trail riding, and no one to ride with, i dont know anyone experienced enough i could put on my older guy to take him along, and i’m afraid he would not limit his canter to a nice slow lope down the trail… More like "WHERES THE NEXT FENCE? i know its coming, i must go faster to find it… " 
I think i’ll stick with my present routine for another couple weeks for my seat to get more stable and then hopefully, try the canter in the “arena”. If that doesnt go over, we’ll leave it and try out in the open.
I really want to get some video and have everyone critique us, second best to not being able to get to lessons… But i’m usually out on my own and no one here to video for me. My husband is typically inside with the baby. Maybe the next warmer nice day i can get him out there to video.
My mare did do a bit of growing this past year, but “i” feel she’s pretty much done now. She more so just filled out a bit more. I’m not really worried about ruining her by lunging, she’s not lunged long enough or hard enough for it to be detrimental, unless while she’s letting the stupids out she does something stupid… I would rather let her do that however, then ride out the bucks she likes to throw in if i dont lunge her! Until she can prove to me that she can behave, she’ll have to continue with her few minutes of stupids on the lunge line. I’m sure she will improve when we can put in a solid 5-6 days of riding a week. Until then, i’m fighting an uphill battle!
Oh, and she is the type of cob that trots. It is more on the rare side to see her cantering around the pasture, not to say that she doesnt at least once a day… But mostly its the tail up in the air, head up, snort and prance off like an arab deal… She has a FANTASTIC trot… But even out in the field, her canter looks unbalanced and rushed. She doesnt know what to do with it. On the lunge line in side reins though, it does have really pretty moments for a couple strides at a time. It may take us a long time to figure it out, but she does have a nice “jumpy” canter when things all move the way they are supposed to. Maybe not Cardi good…
But nicer than most out there. And hands down, her trot will get good scores. That is, if we ever master the canter enough to go to a show! 
Thank you everyone for your ideas! I’m going to bookmark this and study up on your thoughts!