https://www.mut.gg/23/lineup-builder/a5820479-a9ca-497d-a944-e7dfe690657c/#
I would say to definitely balance that Oline out. There are tons of viable 84-85 options (10k-20k) that I would look into. If you have more coins to spend look into the 87s (around 30-50k) or some of the low end 89s (around 100k)
If you want to keep a lot of your coins intact I would recommend making a bunch of upgrades by doing Most Feared master sets and selling the masters. You could also do the same thing with Gridiron Guardians and Campus Heroes at the positions that Most Feared wouldn’t cover. With 1.2 mil you should be able to make upgrades at pretty much every position.
Here’s what I came up with just from doing two Most Feared master sets and one Gridiron Guardian Master set. I also changed your Team Captain and added the other Most Feared monsters.
https://www.mut.gg/23/lineup-builder/dbb0c445-649e-4665-bd4c-4568fdf09273/