Them Hawks are known for being very power hungry, they say 120 watts working power but there are guys on youtube that run 200-600 and say they sound amazing....
I would stay away from tube, for cost, reliability, and sound quality reasons, look into an xpa2 for the medium price, and then the xpr2 for the higher price, if you are stuck on tube, I would want macintosh or carver and you are not getting 300watts per ch with either of them brands for anywhere near $2k... A pair of Bob carver black beauties costs around $13000 and they are 305w into 8 ohms,
BOB CARVER BLACK BEAUTY MONOBLOCKS (PR) at Music Direct and even his cherry 180's are around 200 watts but $8000-10K$
BOB CARVER CHERRY 180 MONOBLOCKS (PR) at Music Direct so way off there, you may be able to find a used mc but I doubt it.... I have a jolida that works and sounds awesome, but no where near the power you are looking for, and I believe their most powerfull amp is only 200 watts and they are $3000 each and you would want a matched pair which would put you around $6K
JOLIDA FUSION MONOBLOCKS (EA) at Music Direct... I have the 202
JOLIDA JD202BRC INTEGRATED TUBE AMP at Music Direct which is around 45 watts and costs around $1150, but I run it with high eff. speakers so that 45 watts gets them screaming much louder than you would want to listen... So in other words tube may not be your best option, I think you will get better sound and definitely more power with an Emotiva 2 channel amp, the xpa2 which I own should get your music opened up..... Also keep in mind you are going to cross the towers at 80hz or so and let the sub handle the bass, so that will free up a lot of power....