I will add that with laptops, in particular, please note that MANY Wi-Fi adapters on laptops cause massive latency spikes, which doesn't matter other than when you need low latency for things like Sonar or other music applications.
Sooooooo, my suggestion is to be prepared to either physically switch off the Wi-Fi (if there is a switch), or use a function key to do do (if it uses a function key for controlling the Wi-Fi), or go into Windows Device Manager and temporarily 'disable' your Wi-Fi adapter, ONLY doing so just prior to launching Sonar - or some other music application that is streaming audio.
I used to use a laptop for gigging, and lots of other folks have used theirs remotely as well, and many have to do as I have posted above, to prevent real problems with latency from the Wi-Fi adapters.
As soon as you finish using your music application, Sonar or whatever, switch the Wi-Fi adapter back on, or enable it in Windows, and you are good to go for surfing again.
It's not a big deal to switch them on/off, but if can make a HUGE difference in your sound quality.
Oh - I would also recommend you make sure your laptop has at least 1 USB 2 port, as some USB-connected audio interfaces freak out if they get plugged into a USB 3 port.
Also, I recommend trying to pick one up that has at least 8 GB of memory, and if possible, get one with a 2nd physical hard drive. Splitting things off so that the OS and applications are one the primary drive, and data libraries and projects and such are on a 2nd physical drive REALLY makes things run a lot zestier.
Best of luck with all of it - we will be here to assist you with anything we can.
Bob Bone