I would not keep the DV-45 in the system.
The BDP-83 has a dedicated stero out and a completly seperate set of DAC's for this purpose.
I don't see where you are gaining anything by leaving the DV-45 in the system.
The OPPO is going to be a true universal player.
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Epson 3500 3D projector
93" Carl's Place Flexiwhite DIY screen
Outlaw 976 Pre/Pro
Outlaw 7500 for center and surrounds
2- Emotiva XPA-1Ls for LF/RF duty
2- Outlaw LFM-1 EX subs
Oppo BDP-105 Blu-ray/DVD/SACD player
Outlaw LCR (Snell Labs) for center channel duty
Tekton Lore monitors L/R
4- Emotiva ERD-1s surround speakers
Monster HTS3600MKII power center