Yes, I think that particular laptop should do for many years to come, a few poker clients + hem is really not that demanding. the 6300hq is still a competent chip.
it's actually very easy to open up most laptops and clean / replace paste. normally it should be done once or twice a year, but once every 2-3y works for lazy people when they notice the fans don't spin anymore or make helicopter take off noises,
https://www.youtube.com/watch?v=vLXa...nnel=How-FixIT
now when you clean the fans, take a pressure air can to every nook of those fan housings, don't just superficially brush it a few times like that guy is doing in the video. also don't need to spread thermal paste with a spatula, just a pea sized dot in the center
if you don't have any small, precision screwdrivers, there are kits readily available, should be 10$ or so for the cheapo ones. don't be afraid, it's a 15 min job, a monkey can unscrew a bunch of small screws, clean some stuff and put them back. there's no know how involved, can't really damage anything either. sooner or later it will have to get done if you plan to use the laptop for longer