I've started a small project to renovate/rebuild an old record player for my wife. I have a degree in Electrical Engineering, but it's been almost 15 years since I last had to project/build a circuit, and it's been very fun revisiting my old books and fiddling with datasheets, KiCAD and LTspice. However, I'm writing this post to understand how would experienced engineers structure this solution. Here's what I know:

• This record player is battery-powered with 9 V, so we're looking at a low-power +4.5 V / -4.5 V amp circuit, which should make some things easier w.r.t power driving and heat dissipation. It has a mono speaker, so I'm not too worried about stereo support either.
• The record player's needle outputs audio at ~5 mV. I studied and tested a couple of RIAA preamps to balance the frequency response, so I know this will be a necessary block in the design. Most prebuilt designs I found are for 40 dB amps, bumping the output to ~500 mV.
• However, the record player also has a built-in radio. The solution I've devised using an Si4824 outputs signal at ~75 mV.

Given the above information, I'd like to know what's the best way to design the amplification circuit for these two inputs. I have the following options:

• Design a RIAA pre-amp for the record needle with a lower gain, matching the 75 mV output of the radio, and feed both to a common power amp circuit. This way I'd only have two circuits to design, but the RIAA pre-amp is a hard one due to the specific response curve.
• Design a pre-amp for the radio, matching the 500 mV output of the ready-made RIAA pre-amps, and feed both to a common power amp circuit. This would require more components/board space (which I don't think is an issue), but would be easier to design, I think?
• Design two totally separate circuits for each one. This can probably be the easiest part since I can probably make do with internet designs, but sounds like a waste. However, I'm not entirely sure how hard it is to design an amp circuit from zero, so maybe it's the best choice?

In your position, what would you do? And why? I'm curious to see how active engineers would tackle this decision.