I already said you might be able to. With all the other fish, especially cichlids, a 75 might get a little crowded, but it may be fine as long as you have good turnover.
o ok sorry
i might leave the cons in their 40 and put just the sevs and the pike in a 75 or a 125
i found an awesome deal on a 120 on craigslist im getting the tank stand and a canister filter for 225
if i can get that im prolly gonna get a pike!
i think you can definitely keep a lepidota in a 75. i keep my cr. sveni in a 55g and cr. lacustris in a 40g but its alittle cramped. ive had them in a 75 at one point but had to move fish around. i always thought a 75 was sufficient but bigger is always better.