I've never known RCA to use Bumblebee capacitors so they may be replacements.
The 120 ohm resistor is in series with the tube heaters. If the tubes light up and the resistor doesn’t look burnt, it’s still good. That doesn’t mean that it won’t open up tomorrow. To answer your question, yes the 10 watt resistor will work, it’s just overkill.
Here is a link to a Sprague Bumblebee capacitor color code chart.http://www.pickguardian.com/pickguardia ... 0Chart.pdf