$25,000 cash available.
Must remain relatively liquid for 12-18 months with a 5-10 business day withdraw period.
Must be zero or very limited risk as the entire amount may be called upon within that period. Limited or capped risk may be acceptable if I can sufficiently mitigate with other funds.
The best I've come up with are high-yield savings in the 1% range or playing the game with slightly lower return reward savings. Looks like the best I can do with that sort of 'game' is a base of around .85% and rewards of 1.6% ($100 on $25,000) moving the funds every 90 days into a new $100 reward account. That's assuming those continue to be available.
I haven't put everything on paper yet to truly determine feasibility, but I'm curious if anyone has any better ideas.