I don't know Cris's current bonus structure, but it was very generous when I signed up. If you are a pro, you know that 20% matchplay is worth a lot more than 10% cash.
Cris took some heat for revoking a bonus from a "professional player" 3-4 years ago, and SBR downgraded them for it. After SBR readmitted them, I posted, and had no problems withdrawing my bonus even after winning.
Your best bet is to simply negotiate with the book. Tell them the kind of action you will give (i.e. the sports and wager types you play, and typical volume). Don't identify yourself as a professional, but just express your concern (i.e. "If I play 5 dimes a game on mlb, does that make me a pro so I lose my bonus?")
Another advantage of telling them what you want, is that a book might give you a better offer than what is listed, and books frequently give higher limits, even on overnights.
If your sole concern is to collect your bonus, simply post up at a book that is "pro-friendly", or doesn't have the "recreational player" clause. There are plenty of these books, and posters here can name them for you.