Going to upgrade so will this work?

[G.O.A.T.]

I had a 55 setup a while back and i recently decided to start back up. so i bought a gt, and a jag. I also have to bichirs that are in a another tank. what i wanna know is how long could a gt, a jag and 2 bichirs last in a 75 gallon. I know the jag gets big but would the gt be ok in the 75 for life?

 

[Deaths Sting]

gt would be good for life in a 75g. as soon as jag hits 8'' i would upgrade to at least 120g.

 

[G.O.A.T.]

ok if i was to get rid of the jag could a severuma and jd live with the gty for life in the 75 or no?