As a pure trainer the viron would probably work. It should get off the ground in about 6-8knts no problem. Won't generate much pull at those wind
speeds but if you're just looking to get a feeling for how a kite feels it will do. The React will take a little more LEI's are significantly less
efficient flyers and therefore it takes more speed before they get flying. I would say for the react you're probably looking for at least 10knts.
Again even at 10 knts the react won't generate much pull so you'd still solidly be in trainer mode not traction mode.
So for my money I wouldn't go less than a 6m. That would allow you to get it in the air, play around and keep it in the long run as a high wind kite.
I would also certainly go foil.
Kites:
HQ: Rush V Pro 350, Apex IV 5.5m, Montana VII 7m, Montana VIII 10m & 14m
Ozone access XC 4m, access v7 4m, access v6 12m, Frenzy 07 7.5m, Frenzy 9m
FlySurfer Speed 4 Lotus 21m, Speed 4 9m, Unity 6, & 10m, Psycho 3 13m
2010 Best Waroo 5m trainer LEI
GI Patrol 106, skis? yup lots, snowboards? Couple of those too
Libre full race stainless
Libre Hardcore