Hello
Ok. Here goes.
Carn a Chlamain is pretty steep and loose in places. It’s a Land Rover track up but a couple of sections are steep. Descent would be either the same as the way up or the tech drovers path.
It’s not a summit but the climb up the Burma Road in Aviemore is steady away with a lovely singletrack descent off it back into Alcie Estate.
Carn Ban Mor is good but has a couple if stream crossings to get to the start.
Glas Tulachan is a track to the summit but again has stream crossings.
Morrone by Braemar is a really good call.
Helvellyn involves a carry at the top.
I suspect that if you have helpers, things will become more manageable.