my advice was really intended as help, I was just trying to inform you of what you are up against, if you really want to do this then you need to learn alot, there is no one answer that is going to make a difference for you.
there are many aspects involved in a system like what you propose, basically it's either you learn or you pay, if you could even find someone to do that for you... if thats "unfriendly" then I'm sorry, what would be more friendly, someone doing this for you? what exactly is it that you expected to see here as a response?
as far as your monitor question google for ultramon, obd2 has a whole lot of info posted in it's own section, any one answer you get from anybody will just be there opinion, best advice there again is to read what many others have discussed & you make your own opinions as to what seems best for you. GUI's are widely varied & have many different traits, the only way to know what will work for you again is... oh you probably don't want to even hear it, but searching is a better answer than someone just giving you there opinion as to what they think is best, no?
bottom line is someone telling you to search is really friendly advice, & is alot better than someone just giving there personal opinion... unless you just wanted someone to list exactly what they think you should use.... how would you even know the answer you got is the best choice for you & your particular install? would you rather just do whatever someone told you to do blindly without knowing all of your options?
welcome to the forum & the advice I would give any friend is