It seems like you've used bitcointalk earlier.
Do you have an original account on these forums?
Yeah come up here with your original old account, hope its not red
2
BTC is not much these days and it might not be enough for you to run advertising campaigns and other promotions to have players on early days. Also the lottery model you are talking about is not actually a lottery. Its a copy of busta game and I think you have one unlicensed version which you gonna use here.
Although domain name is perfect...
2B is not much when it comes to the casinos bankroll.
However 2B is very high when it's only for for domain hosting and development costs.
The biggest issue with this idea is that it has been tried and tested in the past and failed unfortunately.
Basically with a low edge dice available there is absolutely no point in doing a lottery.
Most will simply play with a corresponding win percentage and it can be like a regular lottery.
2 BTC is just about $13,500 right now and previously when I started on the forum and want to create my own gambling site (just in my head and did research without any sort of action to it), I estimated before that you need at least $20,000 to have someone create a good gambling script and site. Not sure if it is still applicable today, but that is what I found out before. This is also not including the initial bankroll of the site, and based from my old research again, you will need at least 10 BTC to operate a site with a decent max winning. I believe usually gambling site will offer as much as 1% of the house bank roll (taking into consideration the kelly criterion), so 1% would give a max win of 0.1 BTC.
In my opinion the development costs can vary since you can outsource most of your work.
Basically if you hire someone in India to the the programming it's much cheaper than say a programmer who lives in the USA.
Hence the costs vary and they also vary depending on the amount of work required. A simple dice site should be much faster and easier to code than something such as a full on casino.
The bigger issue is of course the main bankroll. Even if you spend $20K on development costs, it means nothing when you don't have capital set aside from your casino losses.
Hence most sites these days usually take care of the development but since the bankroll is much more involved they offer users the ability to become investors for that site.
So build the site first, launch it as alpha/beta, add a faucet and see if the investor interest is there.
Either way good luck with your project.