Choosing the “standing foot” option for your doll is something I highly recommend to anyone unless you have a serious foot fetish. If she is able to stand up, it will be easier to dress her, take her in the shower, take pictures of her and so on. Even if you only plan to have her for sex, you might want to keep her in your closet or something.
Having it upright in your closet can save you space. You should think about how you are going to store it before buying it. Do you want to keep her in your bed at all times? OK. What if you have a company coming and you don't want anyone to see it? Planning these things in advance will save you a few problems down the road.
Consider the weight before purchasing your adult doll. Lifting a human who weighs 50 kilos is easy, lifting a doll who weighs 30 kilos is much more difficult. This is due to "dead weight". When you hold a human, that person will help with their body so you can easily and comfortably wear them.
A perfect doll won't do that at all. It takes some getting used to lifting and carrying a doll. You'll find the right technique with practice, but you'll be shocked at how heavy your doll is at first. Many new doll owners end up regretting their purchase and selling their doll within the first week, simply because they can't handle the dead weight. Don't make this mistake. You can try this by lifting a big sack of potatoes or something, just to get an idea - although a doll is bigger in size, so the weight is more spread.
Consider the price of the doll before ordering one. If you don't have a lot of money and you're not sure which dolls are right for you, you can go for the cheaper one. But if you are certain that you are the type of person who would like to have a doll and that money is not a big problem for you, I advise you to buy the one you want the most. Why? Because you'll be watching it every day for years to come.
Isn't it worth spending a few hundred extra dollars to get the sexiest perfect doll, when you think about it? If you buy one of the less attractive ones just because you didn't want to spend so much money, you'll end up regretting it. Many new anime sex doll owners are surprised at how much they love having a doll. It is easily worth the money, in my opinion.