To be honest I don't think any horse is a worthy business investment.
If you have her for six months just the upkeep costs are going to be more than you'll make back, and then your time on top of that. It's not like you're picking her up dirt cheap either.
If you want to buy her to train and ride for fun, then eventually sell on, then sure go ahead, she looks sweet and lovely. But if you're buying with the intention to turn a profit I don't think that is going to happen at those prices.