BTC is a good investment option for everyone, if you can have the patience to hold it for long time. You should also bear it in mind that bitcoin market is not always green. There will come a time when the market will be bearish, and when that time comes, you shouldn't be tempted to sell your bitcoin out of panic, because that's part of the characteristics of bitcoin. Another thing is that you should invest only money you won't be needing for the next 4 years. Don't invest the money you will be needing for the next 2 to 3 years in bitcoin, so that you won't be under any pressure when the bear market comes in.

As for the money you intend investing monthly, only you can tell if that's okay for you, because it depends on how much disposable income you have at the end of every month. If you know your family needs will be well taken care of after investing that amount then it's fine. But if you know that your family needs will be affected if you invest such amount of money, then you should consider reducing it. Don't starve yourself because you want to make investment in bitcoin.