Grinding away

I started at bet365.com last night. 100% bonus, $200 max, $4000 WR. This will take a while to work off, but it's my first $200 bonus instead of $100.

I'm still thinking about that future state when I'm gonna have to start going after stickies, and what strategy to use:

A) all at once + small bets to reach WR, or
B) 15% plus a system + small bets once goal is met.

A third strategy I read about today is kind of an inverse of the first:

C) figure out what the WR would be for the strategy A, small bet to reach that, then do the all at once for the final push to the WR.

I've no idea which to use at this point. Fortunately, at this point, I don't have to.