First off, there are very few FWs being produced in that length, right now. IMO, and a lot of others', a TT of that length might serve you better. For the life of me, given the number of people I read about wanting FWs <30', I can't figure out why the mfrs don't make more of them. As for trucks, a 3/4t would easily handle that size FW. If you go long bed, you wouldn't need a slider; a short bed...maybe; depends both on the FW and the truck. If this is a "starter" FW, then look for a SRW 1t as it would allow you to go to a bigger FW, if you so desire, and they're not a lot more than a comparable 3/4t. Another thing to consider, is all the "anti-shock" stuff you put in place, =will= reduce your payload, as most of it's not light. With FWs the =key= thing to remember is it's not how much you can tow, but how much you can =carry=, i.e. payload. The common sense opinion seems to be that if you stay under your rear axle rating and your tire rating on your payload, then you're pretty well likely to be OK. There are plenty of people who are over on combined weight, but well under on axle and tire ratings. Then, there are the ones who are totally opposite and won't go a lb over =any= rating and likely give themselves ulcers trying to figure out how to do it. :B
Lyle