Large SQL installation, reccomendations

hi, ok bit of a hypothetical question. If you were going to be installing a Navision 3.7 SQL server implimentation what Hardware specs would you Reccomend/demmand? also how would you setup the SQL server? Write Cache = ?? Commit Cache = ?? Normal Cache = ?? info: 70 - 100 total users 30 users connect over WAN SQL Database Size 25gb+ Now your best possible / fastest / most stable server. thanks mark.