Advice on upgraded system

As a person who has been out of hi-end for more years than I'd like to remember I'd like to ask some advice. My system : (not all received yet) Pass X-250, Pass X2 pre-amp, Levinson 360s DAC, No. 37 transport, B&W 802III and audioquest forest bi-wired. Interconnects will be audioquest diamond and lapis. My questions are (i) since the AQ diamond is a higher grade interconnect than the lapis, should I use it between the DAC and X2 or between the X2 and X-250 and (ii) since I live in central fl without any quality audio dealers I've had to put this system together through just accumulating knowledge at web sites, such as this quality site. Does the combination of components sound "right" to the experts out there? I'm really at a disadvantage w/o able to hear the units together for lack resources here in fl. I guess I'm just looking for validation of the set-up. Any and all comments and insights will be appreciated. I'm really looking forward to actually putting it altogether in the next week or so. Thanks in advance.