You can ski behind a Futura, I had a 4.6m Sport with a 50hp Yamaha that easily pulled my lardy arse out of the water. It was also quick enough for mono skiing (just).
But mine had an alloy floor and jockey console and although you could break it down it was much easier to trail it.
If you want to rig each time you will want an airfloor like the Futura Mk3 FR but the engine is still going to be a massive weight. Best option would be a 40hp 2 stroke, but it will still need 2 of you to carry it. A 40hp will ski most normal sized adults. Tiller steer is easier to set up, the Zodiac Futura steering system works well but its a big faff to rig for a day out.
As Henry said, rough water handling wont be a patch on a Searider, but it calmer conditions you will leave it for dead
You are going to need a very big car to get all this gear in, think Range Rover size boot, and it will soon become a big pain to use for a day out. The poster above is right, 3.8m airfloor is the biggest you want for a day sailor, Bombard 380 or Zodiac Futura Mk2C FR both work well as fast day boats with 25hp.