I'll second Pdreher's tube selection, I used the same combo with enjoyable results. The 12AX7's are the impute tubes and have the biggest effect on the sound, the 6922 are like spices they accent the main flavor.
Kevin Deal at upscale Audio usually has the CV-4004's (gold grade) in stock, I would check with Brent Jessie first for the Amperex PQ 6922's. Don't be lured by sellers with cheaper priced tubes there's always a reason for the price, usually poorly balanced sections or tubes that are rated stronger than they are. Always buy NOS and not slightly used!!!!!!!!!!
Kevin Deal at upscale Audio usually has the CV-4004's (gold grade) in stock, I would check with Brent Jessie first for the Amperex PQ 6922's. Don't be lured by sellers with cheaper priced tubes there's always a reason for the price, usually poorly balanced sections or tubes that are rated stronger than they are. Always buy NOS and not slightly used!!!!!!!!!!