4349s are sensitive speakers. 30+ watts of push pull tube goodness should be more than sufficient to drive your speakers to terrifying volume with room still to spare.
Since you don’t have a preamp, just go for integrated. The good ones in this price range are all integrated IMO.
I am running two setups of Baltic Evolution of 90db sensitivity. One pair is driven with AudioNote Cobra (with Genalex KT77 upgrade) and the other with Lab12 Integre4 MKII. Both are incredibly enjoyable, realistic, and versatile. The Cobra gives a more muscular and more romanticized sound whereas the Lab12 gives an incredibly detailed and natural sound. Both are just priced at $6000 and you don’t need to think of another preamp.