The 30mm tube and 50mm objectives just add costs and weight and add nothing to the ability of the scopes use. There are more negatives than positives, especially on a trim lightweight rifle like yours. You don't need 14X to shoot big game at 700 yards, let alone only 400. If you're shooting small varmints at 400-500 yards yes, deer and elk, no. The only thing a 30mm tube does is give you more adjustment if you're shooting 1000 yards or more.
The quality of the glass is more important than how many X's you have and the size of the objective. The size of the front objective combined with the scopes magnification determine how much light comes through the scope.
Divide the front objective in millimeters by the magnification your scope is set on to determine the size of the beam of light leaving the rear of the scope. It should be around 5mm or 6mm. Any less and the scope will perform poorly in low light. Any more than about 6mm and the human eye cannot use it.
A 40mm objective lets 5mm of light through when set on 8X. A 50mm scope lets 5mm of light through when set on 10X and would be identical in low light. Above 10X and both are sub par. Below 8X and both let more light through than the human eye can use. Going to a 50mm objective gives you an extra 2-3 minutes of usable light only when set on 9X.
I shot a small buck yesterday 25 minutes before sunrise with a 20mm scope on 4X in thick fog and had no trouble seeing him. It is legal to shoot 30 minutes before sunrise and 30 minutes after sunset here. I have no trouble seeing and shooting animals within those times with even a 20mm objective. I'd not add the extra cost and weight of a 50mm objective.
You can buy a 3-9X40 scope from a lot of manufacturers for $100 less than any of those and get a lot better scope. My only experience with Meopta is the Zeiss Conquest that was actually made by Meopta. That scope has since been discontinued and was Meopta's cheapest scope. If the others are as good I'd buy one in a heartbeat.
The Leupold VX3i in a 3.5-10X40 $150 cheaper is a good choice
https://swfa.com/leupold-3-5-10x40-vx-3i-riflescope-9.html
This fixed power 6X would be another good choice
https://swfa.com/leupold-6x42-fx-3-riflescope-5.html