There's this X factor that you can't really confirm, or maybe even more than one variable that you have no control over, plus any number of things that can go wrong, or you simply won't have the traffic or volume that you need. What I am saying is that there is something out there that can make or break your venture.
Business is a gamble. Good business people have a decent business plan, yet they can still fail. Gambling websites are more of a gamble especially in this bitcoin world. You need players to trust your site and you. And since you are accepting bitcoin you'd need to either have very good explanations of how the game operates or some formula that is easily verifiable, such as a provably fair method.
If you go with the softswiss games, although I am NOT familiar with any of their games, I am willing to bet NONE of them are "provably fair", and with that, you are not going to get ANY players from this forum. You'll get them where all the other casinos are getting them, somewhere out there, poker forums, or marketing and advertising on other websites.
As for risk versus reward, you already know that (or you should). Low risk, low reward. High risk, high reward.
If you're asking advice about how to operate a "normal" non-bitcoin casino running on softswiss software or platform, you're in the wrong forum. Merely accepting bitcoin does not make your casino a "bitcoin" casino that isn't considered "traditional".
Any game that involves dice, decks of cards, or coin flips MUST be provably fair. Or as close to it as possible.
As for your "set aside some money", that's where you can contract with one of many bitcoin escrow "agents" here. There's a handy list in the "Service Discussion" subforum.
Bitcoin Forum > Economy > Marketplace > Service Discussion > Bitcointalk Escrows - Trade Safely!
What will happen is your investors send money to the escrow and he holds this money and dispenses it as the investors wish or according to some form of consensus between them and you, and payment goes directly to whoever needs to be paid. GPG comes in handy here, as well as some basic knowledge of how bitcoin works.
You'll want one who is trusted, has handled more money than you are asking him to hold, either collectively or at any given time, and has some experience with gambling, both as a player and as an operator. Escrows do not guarantee that businesses or equipment will be profitable, they only guarantee that the funds go to where they should go, and buyers and sellers (in the case of trading) are satisfied with their transactions.
See, if the money is not in escrow, then what is to stop an investor from pulling out? Unless it is allowed in the terms of investment, you don't really want 100 BTC being funded, and then a few of them decide they don't like it anymore and your funds drop to 10 BTC. (Or below what you need to even start it out.) It's also a risk they have to be willing to take.
P.S. The last guy on that list will charge you a 5% fee, that list is not updated often.
Thank you for the idea on the escrow services which I already had that in mind before but I was afraid that the escrow might try to steal the money due to it being a pretty decent amount or not being reliable enough to send the money to the people who need to be paid when he/she should. Also according to Softwiss their games are provable fair and that's another reason why I wanted to go with them because I don't know if the custom game developer can do provably fair for the same price so it would be all around better to use Softswiss in my opinion.