Suggestions please for small inflatable

[Iron Dials]

I'm planning to buy a small inflatable.

It will be used as both a tender for our rib (anchoring off tropical islands etc) and also as a standalone for pottering near shore.

While I'm still learning about ribs, I know even less about smaller inflatables. Ideally we would be able to carry 4 in it at a time, 3 minimum.

The time has also come to buy an aux outboard, 6hp 4stroke is the plan, so any dinghy would ideally be able to be used with the same engine.

To start my questions are:
What type of floor do I go for?
Assuming this is a low performance set up, is long/short shaft an issue?( I would prioritise correct shaft length as an aux)
Can boats like these be inflated, with no more than moderate difficulty and some mild swearing, whilst on a rib?
Are they stable when towed?
Are there brands to avoid (maybe an unfair question)?
What else should I look for/avoid?

Thanks in advance.