a few more suggested renderings...
1 if you (sing.) want/need, go to the mountain
2 let the Greeks be gathered in the plain
3 do not send for the boats
4 urge Tissaphernes to send necklaces to the rulers with (and) bracelets and garments
5 let him proceed with the sword in his right hand
6 buy the supplies and accompany (us)
7 therefore go immediately with Cyrus to the market-place for the sake ...