Hello Hellmanjk and welcome to the AVADirect forums!
Let's get straight to the questions shall we?
1 - We're always happy to upgrade the systems as the new hardware comes out, however when it comes to laptops that may not always be so easy. The motherboard in the P570WM is a proprietary board built just for this notebook. While it accepts any 2011 socket CPU, only motherboards that work in this are the Clevo specific boards and they can not be upgraded in any way. This means that if the socket standard changes in the future, then you would not be able to get a new CPU in the system. With Desktops, this isn't a big deal because you can easily swap out the motherboard, but with notebooks, this is much more difficult. This is not to say that the P570WM is completely not upgradeable. So far, you may pick any CPU from the i7-3xxx or i7-4xxx range. Unless Intel makes a major socket revision or changes to the next workstation CPU, you will most likely be able to use that as well.
2 - As of right now, we have not yet had a chance to include the 120Hz screen. We are working with Clevo to get us that option so in the mean time we only have the Glossy and Matte screen options of the standard screens.
3- GPU upgrades, same thing applies that I've described in my CPU response. If the technology changes in any way and the manufacturer (Clevo) does not account for with BIOS updates or similar upgrades then the new GPU may not be compatible. This is pretty much true for most notebooks. If you look at any notebooks now that are 3-4 years old, you would likely not be able to install the current GPUs on the market, such as GTX 880m or similar.
4- Because we offer some of the lowest prices on the system builder's market, we do not provide additional discounts, however there are promotions running every so often that you can take advantage of and they're usually posted on our forum under AVADirect section.
5- Sometimes we get to enjoy the discounts offered on black Friday, but this is typically out of our control. If we encounter these savings we usually pass them onto the customers, but the best bet would be to check our site at that time to see if there are any special deals.
6- We do not offer monthly payments, however we do allow Paypal purchases, and with paypal, you could use options such as BillMeLater that can be paid off in installments.
Now, if you're looking for the P570WM as a strictly gaming notebook, I believe you're probably going over the top. The 570WM is intended for a workstation replacement that is somewhat mobile. Idea behind it is to replace someone's rendering machine, someone's video editing workstation or similar type of work or office computers that need plenty of power. If you simply want gaming notebooks, there are better choices that utilize mobile components and do not rely on desktop CPUs for performance.
For example, notebooks such as P177SM-A are much better suited for gaming than the P570WM. Not to say that P570WM is not good. It is a great notebook, but it is built to do so much more than games. If you don't plan on using it for all of those things it was built for, then there are better choices out there for gaming notebooks.
I hope that answers most of your questions. If you have any more questions or any of my explanations were unclear, feel free to post anytime!