The conditions in the tank that I want to keep them in are as follows:

TDS: 143 ppm
pH: 6.02
GH: 2-3 dH
KH: 0-1 dH
Temp 78F

Should I try to change any of these?

What are the ideal conditions for L183s

TDS: ?
GH: ?
KH: ?
pH: ? 6.0-7.0
Temp: ?

Also, I know that his pair spawns on the substrate... not on the glass or in a pipe... so that also matches up

yeah looks pretty close to me. My friend has the adults, I will try to get him to send me some pictures.

This is probably going to be tough... anyone know the species of this young whiptail?

Does anyone have any L183s?