Yeah, you can upgrade later since I only had enough for +3 the first time I got it, then upgraded it later when I got more Flex Pts.
Sucks that I didn't create more players originally...then they could be roughly at the same level and we could have replace those fags easier. The only other player I had is some Lvl 8 FS (with a 3 boosts left) on some shitty D-league team.