If I had to recommend a fairly lightweight & very comfortable rig it would be a bulle mle, amazing quality for the money, choose whatever pouches you want on it & stick a molle bladder pouch on the back panel.
you could have an excellent complete rig for around £80ish new, considerably less if found secondhand.
ive a couple in od, my "go to" colours for all my rigs, but they can be found in tan as well