I would seriously consider holding on to that money for now and be ready to buy up the coin(s) you intended to mine directly in the next few months. The rig you are contemplating will probably cost you well over $3,000 right now due to the highly inflated GPU prices. The coin mining difficulty levels are all at all time highs and showing no signs of slowing down, meanwhile most coin prices are continuing to go lower, also with no signs of reversing any time soon.
Good advice. If you are getting into mining just looking to make a profit its a very difficult time. That being said that is what everyone said last June, I didn't do it then and kicked myself for it. I only started in late December with three rigs and about 30% paid back so far but I am HODL'ing all my ether in hopes of big price increases this year as well as diversifying into promising ICOs. I also went into this with the HOPE of only breaking even and was fine if I lost half my investment.
I was also looking at getting a computer to use for VR so it helped justify that for one of them (or at least to my wife..hehe) and then I can setup a second one for the kids. All of the GPUs I bought I can sell still for the same or more than I paid for but if it becomes completely unprofitable to mine I may just keep them all for doing some AI modeling now that i have all this compute power!
I did weigh my options of just investing the 10k+ I laid out for this into crypto but liked the idea of hedging my bets a bit and having somewhat of an asset if the market really took a crapper. I did want to do one more rig but it started to get too difficult to get GPUs as I still have a few on backorder to finish my 3rd rig.