Get rid of the coupling cap.
No. Read the rest of the thread, they will be needed to remove the DC offset.
The three points marked VG should all be connected together. You will get nothing on the second op amp until you connect the VG to the VG of the first op amp. If you do not want to use that top amplifier as a VG generator then use two resistors and connect them to the VG on the two op amps.
Something like this in fact:The unmarked cap sets the cutoff, since you are using 40kHz (not 40MHz as you said!!)choosing C = 1uF will be fine.