chain looks okay,

i can't tell from the desc of the hub whether it is designed for a cassette or a threadon freewheel.
if you really have a threadon freewheel type hub that's a good freewheel to use.otherwise, you'll need a cassette. i have found very adequate ones for even less than an inexpensive freewheel on occasion.

the chainring may or may not work depending on the BCD (bolt circle diameter) of the chainring you are looking at and the BCD of your crank. cranks come in various BCD's (144, 130, 110, 94) and so do chainrings. i have found that it is of little consequence if it is designed for a triple, double, road or single speed. they all seem to work the same if only one is used. OTOH the BCD of the chainring must match the BCD of the crank.

BTW, the description of the chainring doesn't mention the BCD, i don't think. that would not be informative enough for me to make a purchase. you first need to find out the BCD of the crank (i couldn't find it) then google "nnn BCD chainring 52t" (where nnn is the BCD of your crank) or something similar to find matching chainrings. i often find them new on ebay for 20-30 delivered if i search a while.