Do you have much soldiering in your background?
Just a note of caution that would have saved me a lot of grief when I was younger!
I was in high school and bought a model 198/A kit pre-amp and 2 ea Tiger .01 mono-block power amps from a company called South Western Technical Products Co (SWTP). These were quality designs at bargain prices (and I definitely did not have the money to get what I wanted pre-made)!
As you might imagine, the pre-amp was quite a complex assembly I assembled these units with loving care, taking my time and making sure I had good solid connections.
I was crestfallen when I finally hooked it all up and got ... nothing!
Out of ignorance, I had no idea that, in taking my time, I was frying transistors!
I ended up giving the package to an EE masters student who invested a lot of time troubleshooting and replacing the cooked components (I couldn't stand the thought of throwing them in the trash). He ended up with a nice setup.
Being an amp, I suspect you will not have so many fragile components as that pre-amp did.
And make no mistake, I was really taking my time, I don't think this is a very difficult assembly, but don't be oblivious to the possibility of overheating while soldiering.
If I had only known to ask a couple of friends that did electronics about which components were fragile and how to best make a good soldier joint quickly or about heat sinking strategies to protect those components.
For anyone curious, I found a link to the very catalog I ordered from:
Did anyone else here get one of their kits?
Edit: also, get some ventilation going, soldier fumes are not very healthy. Unless things have changed, there is lead in the fumes! Probably not enough to be concerned about since you are not doing it full-time, but worth a quick google.