Mind You, I am not making a recommendation to make this a main trading account. I question if a firm like this will survive a bear market or just wrap things up. My interest in it is as a sub account when you occasionally need to goose the leverage intraday.
Prop Firm make money on commish, desk fees and/or a payout structure. There's much more knowlegeable guys in this area on ET. Unfortunately, the industry is really geared to day trading. If your set on overnight holds for the bulk of your profits, it will be a tough search. Especially, with interest rates set to rise. Putting on more day strategies is not a bad idea, if you got 'em.
Tell us you find.
suretrader doesn't look bad. I might try out their demo account to see how it is before putting some nominal amount to start.