c2d era laptop. first step if you haven't yet, swap the hdd for a low-cost sata ssd if you can. if you have some homeless sodimms, up the ram, too, if it won't cost anything to do it.
if you're going with mx, you want the fluxbox spin; or opt for antix with icewm instead.
otherwise start with a debian base install (no de or extra sw at install), then add only what you need. peppermint is another option--a basic debian with xfce out-of-the-box and little else. it's what i've been using lately on similar hardware.
for something 'different', you could look at slax.
agreed. games read a lot of random data. performance won't be nearly as 'good' as op expects.
the difference of $50 matters that much for op, i think that not spending anything would be the more prudent choice.
that said, if it were me i'd raid-0 two of them and keep the third as a single drop-in replacement for when that array dies; containing a full backup of the array's contents kept up-to-date with every major patch the games on it gets.
newsletters can have trackers and shit built right in, and this is especially true when using a service to do the mailing. this is, of course, on top of the contact info and anything else requested at 'signup'. none of which needs to be 'required' when reading a web site or an author-submitted post somewhere. there's basically two reasons to lock content behind a 'newsletter': a paid sub is coming, or selling readers' data.
tbf, customers have a near-infinite number of different issues and problems. those 'flow charts' and scripts are designed to start at a baseline and work up from there and they start with the most common ones. you'd be paying more for whatever it is you're calling in about if they hired only fully-qualified persons that can 'think on their feet' without the flow charts and scripts wrt whatever issue it is you have, troubleshooting it, and coming up with the specific solution for you... a hell of a lot more. and yes, the first thing you should usually try with tech items is a power cycle. ::insert itcrowd-turnitoffandonagain.jpg::
the major OEMs basically get paid to put windows on the systems they sell. they get the licenses at a deep discount, then top that off with the money coming in for the preinstalled garbage.