Odd betting structure - what would you do?

[AKQJ10]

That's the standard advice for spread-limit. Essentially it's going to play much more like fixed-limit than NL, so OP will want to make sure his limit game is solid.

I'm not sure "bet the max every time" is really optimal, though. I think like in NL you should have different bet/raise sizes to accomplish different goals and only mix them up as needed to disguise your motives. If a $2 raise is usually a pot-sweetener, but occasionally comes when you'd like to think the field, and a $5 raise is usually to thin the field but occasionally a pot-sweetener, I think you'll do better. Just watch how the table reacts to different raise sizes, and don't kill your action if you don't intend to.

That said, it would be fine to just pick a number between 3 and 5 and always size your bet/raise accordingly.

(Incidentally, spread games like $1-3 and $1-5 are still spread occasionally in casinos -- more for stud than for HE, but occasionally for HE. Did I hear the Excalibur got rid of the $1-3 and $2-6?)