I’d take @michaelL and @bide advice.
With @michaelL advice, Tribrach and tripod are typically for Total Stations and the like. Not that u cannot use it with GNSS equipment, but this advice is better as you can throw a rover/prism pole up quickly with a static height everytime instead of fooling with measuring everytime u set the base up using a conventional tripod and tribrach (and heavy to lug)
Costs more, but much more convenient.
Also consider traveling and shipping. There are light weight options also.