Handsprings, tucks and aerials for beginners?

Hey guys! I am new to your board, I am from Europe (Austria) and I really admire the great gymnasts of your country! I hope I can find some help here!

I am flexible (oversplits and good back and shoulder stretches) and not too weak (15 hanging leg raises to L position and 30 V Ups, 35 push-ups, elbow lever, press handstand against a wall)

I can do a front walkover, a kickover, one-handed cartwheel, and a roundoff, I started gymnastics 4 months ago. I don't want to get really good on bars or vault, I just want some tumbling and strength skills:

Front handspring

Back handspring

Front tuck

Back tuck

Aerial

Side aerial

Front aerial

Back handspring layout

And some combinations like RO BHS Back Tuck

A straddle press to handstand

20 hanging leg raises

I know that nobody can tell but what would you think how long it would approx. take me if I am willing to work hard and eat clean (lot of protein)?

I train gymnastics 8 hours a week

Stretch everyday

Train some sets of leg raises and press handstands everyday at home

Hope someone can help me!!