Need advice before I buy a new laptop.

I have edited a lot with the following equipment :
Camcorder : Canon XA-10. AVCHD 2.0, 24 Mbps 50i, 1920*1080 PAL.
Laptop : PE12. Windows 8.1 with settings for maximum power.
1 gigabyte graphics memory. Intel core i7 3632qm processor (quad core, 2.2 GHz with max 3.2 GHz). 5400 RPM hard drive in 2 partitions. 6 gigabyte RAM.
That is old so I need to buy something newer.
When it comes to new camcorder, I am considering Canon XA-60, which can deliever XF-AVC 45 Mbps. Or Panasonic HC-X2000E , which can deliever footage with 100 Mbps. Yes, both camcorders can also deliver 3840*2160 but that is less relevant for me.
I need something portable since I will move the computer a few hundred meters multiple times per day.

1. According to Adobe, the trial version only works for 7 days. And the program itself will stop working after 3 years. That is not funny. Should scare away customers. So do I misunderstan?
Nowadays many do as I do, keep the same laptop or desktop until it is physically worn out after a decade, so limiting a licence to 3 years makes no sense for me.
The present version of PE requires so much more powerful hardware than the edition I paid for a decade ago, that I can't use the present version on my old laptop, not even for editing footage from my old camcorder. So if I buy a licence today and is forced to buy a new licence in 3 years, I will presumably not be able to install the latter version on the laptop I buy today.

2. There is no internet connection in the room where I do most video editing. Please tell if that will give any problem with the latest version of PE. Yes, I have internet at home, but little of my editing will be done at home.

3. What is the highest bitrate I can edit with the latest version of PE? I mean, if I film with 1920*1080 and either 50p or 50i.

I have more questions, but right now I stop here.