need input !

[cosworth34677]

so i'm need so input, i got this old bruder excavator. its pretty old (three years)
worn and beat. and i got two project i want to do. its a magom hrc convert you know the kit you buy and install your self not the rtr ones. so should i take the valves and hydraulics and.......

1> repair the old thing with another bruder cat 320.
2>take the parts and rebuild my old effers knuckle boom crane? (https://www.youtube.com/watch?v=5J0W...hA2OxV-9svcvtQ)
3> take the parts and build a dozer? all metal like my loader.
4> just sell the hole pile and start over?

this is kind of a loaded question.because i want to get either the magom hrc all metal excavator or the china kat. that why i'm thinking of using the parts for something else, i mean a dozer looks like a fun build, but are they fun to drive? the loader is really fun to puttle around with and i just made some forks so now i can load my flat beds. so what do you wise truck guys think?