You don't need a press for a lug, just use a stock steel type lug nut and thread the lug tight. Make sure to use the flat of the nut and some light grease to prevent galling.

The brake line you purchased is metric, yes? Don't forget to clean and repaint wherever brake fluid sprayed.

Are you also replacing the several brake hoses in this refresh?

1988 Mighty Max turbo 2.6 service body
1980 Power Wagon W400
Out of the parts business now, unless you visit Montero Ranch