I have a tango and used the OS .56 Alpha with an APC 13x4 sport prop turning at 11,300rpm which proved to be a very good combination.

I'd expect your YS .63 to turn that prop much faster so you could go for the 13x4W.

I tached the 14x5N at an even 10,000 on the .56 but i have not flown with that prop yet. It is the prop that most favoured for the YS .63 in Japan for freestyle aerobatics so it should be a great match.