My suggestions are a little late, but with any of the Z lenses you cannot go wrong. Personally I have the 14-30 f4, 14-24 f2.8, 24-70 f4 & f2.8 and 70-200 f2.8 for landscape. The f4's are lighter, smaller and pack easier for travel, while the f2.8's have better ergonomics and balance on a Z9, which I just like the feel of. The f4's fit nicely on the Z7 or Z6 (ii as well ) as do the f2.8's. Optically, to my eye there is very little loss in the f4s and would not hesitate to use them when I need to travel light.
One thing that has not been mentioned or I did not see is that the 14-30 f4 easily takes screw on filters, whereas the f2.8 will not, at least without expensive adapters if available. In my opinion Nikon Z owners are in the unusual and fortunate position that regardless of which lenses they decide on, they cannot go wrong optically. You would be giving up very little if anything by going with the f4 14-30 and f4 24-70 for landscape. "Budget price" does not mean "budget quality", it is just what you prefer ergonomically and your budget