It depends on how cheap, and whether you think saving $40 for a year or so is worth carrying the extra 1 1/2 kg up the mountain. I used a similar type of battery for many years in SOTA type activations before SOTA came along and was quite happy. Now weight is a big concern and I have discarded anything with lead in it.
Your rig isn’t the lightest one around either and you will need to reduce it’s input so it does not draw more than 4 A on TX. that should give you from an hour to 1 1/2 hours on the hill.
Apart from a smart charger you need to watch the minimum battery voltage in the field. The rig has a built in voltmeter. Shut down when the voltage drops below 11.5 V and never discharge it below 11.0 V and then you should get many recharges out of it.
For your antenna a 300 ohm slim jim in a conduit is suggested as being effective, light and robust.
Don’t forget plenty of water, lunch or a snack and protective clothing. There is plenty of advice if going into less frequented areas. I always carry staff that I haven’t needed yet but …