I'm with Grant.
An image train needs to be sleek, light, sweet...few components as possible. Threaded versus pinch clamped as much as possible. Weight and a lot of pinch clamping makes for "sag" and difficult collimation.
I rely on an accurately aligned Telrad although a guidescope works too. I do all that visually with a 9mm eyepiece. Smallest field of view as possible. Use a bright alignment star. Vega is what I use currently.
Yes, the "finders" only get you near the object, and the monitor is black...turn up the gain, higher than you would image at...open the histogram...any light from the planet or its moons will start to fill the histogram...Sometimes rarely, you nail the subject without doing the "sweeping grid search." (Sorry, it's from my Search and Rescue days.) Your camera will need to be in focus or nearly focused. Use the Moon if it is up.
My scope is EQ mounted...So, with a "sweeping grid search," I manually turn the DEC knob back and forth (sweeping motion) as I hold down the RA button and let the RA motor advance 2 to 4 x tracking speed...and, reverse the motor if I miss it...the histogram blips, and screen shows bright circle flash as sensor catches some light...final centering...then, adjust camera to start video captures.
About things that amaze me that always come up...Powermate 2.5x...probably the most popular device to get your focal length up for high resolution imaging. And, probably the most incorrectly used. You want the Powermate top surface as close to the camera sensor to maximize magnification. They make an adapter for that. When you get beyond 100mm, it effectively becomes a 2x barlow. So, one has to consider where it is placed in the sequence of components. Otherwise, use a 2x barlow and place it anywhere you want.
Filter wheel, ADC, Powermate, camera is my current configuration. I'm using an 8 inch SCT. If you go monochrome, this will work...if you go color, you won't have the filter wheel, and an even sleeker design.