All looks nice, but i would make some  changes. For example, i would put less into Bitcoin, because i think it is already at peak (i know i might be wrong).
Secondly, i would consider Ark, Ardor and Walton. I would also recommend a few 'low marketcap' coins, that could potentially explode. Such example is Oyster Pearl.

But overall, i would say it is a safe hold as it is. But do know, that if you diversify like that, surely you cut your losses, because if one goes south, others can still prosper. But you also  aren't going to get such a high return. Considering everything and that your plan is buying a house, better to be on the safe side.

I would say keep it as it is, maybe shuffle some coins, perhaps add a few hidden gems.