unfortunately, I have a fair amount of plumbing experience. it is all do-it-yourself out here. just the travel would be more than I would want to pay.
don't freak out if after you get everything back together there is still a random drip - don't overtighten things. just keep a drip pan under it and see if time and fresh drain scum doesn't fill in any imperfections. (yes I am serious) a heavy drip needs attention but a very slow with time between often seals up on its own.
most of that full replacement product looks good. the flex hose going into the wall bothers me, if those ridges are on the inside too it is just asking for build up. buy a second one if it fits well and works so you will be ready for next time. 
AND don't forget - there are you tube videos of EVERYTHING!
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