Congradulations on a Job well done !! 

Don't worry about the resale value,, It'll do the job for you for years and a fraction of the price of "buying one off the shelf".  (I've seen my share of pic's of wrecked "store bought" sprayers. Haven't you??)

Nice thing is the nice wide stance yet low center or gravity on your machine.

Nothing to feel 'less than' about.

Great machine, reasonable cost, does the job well. 

Should be proud of your accomplishment.