which way to make more $$

[allyasia]

i like to get exprience on 2+2
would i make more $$ doing 3-4 table at 50NL or would i make more money doing 3-4 table of 25NL at fulltilt and another 3-4 table 25NL at crypto?
so if crypto is not harder then FTP, then i will get 2x of current rakeback, 2x winning per month (3-4BB/100), addition $500 bonus per month at crypto vs 3-4 table of 50NL. of course at 50NL, my rake will increase (?%) and more money can be make at the table.
let's assume i can maintain the winrate 3-4BB/100 at 50NL.
which way i can make more $$.
side note
* never done 8 multi-table
* getting 6-8000 FTP point per month, so cypto bonus is not a problem.
* I got my butt kick hard on my first attemp at 50NL. lost almost 20% of my bankroll in 2 day.
* which crypto side offer gifts store like FTP store?