A network for historic guitars and vihuelas
The Lute Society have instruments to hire but I don't know how much they charge. Contact the secretary at email@example.com for details.
you could use classical guitar, restring it, make lower tension meanwhile.
Or you could use also parlour guitar which are popular in US and available at wide range - it has smaller size but approx the same scale.
Also change strings for baroque tuning and lower tension.
You wont get double courses but you can get accomodated with tuning and repertoire and general technique