Hi Brian,
Obviously the answer to your question is dependent on how novice is novice. In most cases enthusiasm can make up for a lot for lack of experience. My advice would be give it a try. The purpose of this and other forums is to give you assistance when you get stuck.
The bumper and wing parting company should not need the replacement of both. The bumper attaches to a braket which is screwed or clipped to the wing. If the wing is rotten then the bracket will still be attached to the bumper and will have parted company with the wing. Replace the wing, part the braket, fix one half to the wing and present the bumper back to the car. The bracket should mate with it's other half on the bumper and hey presto - good as new.
The wings themselves are bolted on. A couple of bolts are accessed on the front pillar by opening the door. another is hidden behind the indicator. There's a row of bolts on the edge revealed by opening the bonnet and there are a couple hidden behind the bumper.
Go on, have a go and let us know how you get on.
Cheers
noz
ps
on holiday for the next two weeks so it may explain no immediate answer in the meantime.