Hello. A few rigging questions for someone trying to learn

[Southbound]

Hello,

I am trying to re-rig and old 40 Foot 19,000 lb full keel sloop. I have a nice mast section but it is about 1 lb/ foot heavier than desired. The spar is 56 feet over all and weighs in at just under 5.9lb/ft vs. 4.8 that is desired so we're talking about a spar that weighs 61 pounds more than desired specifications. - fairly substantial amount.

However, The original spar in 1970 was the same approximate weight as the one I have been planning to put on. The original was also 5 feet shorter resulting in a pretty under rigged, slow in light air boat. So I suppose we are really talking about adding 30 lbs to the rig all of it above the original mast.

I am curious how much this extra weight aloft could potentially affect righting moment.

I am hopeful that I can compensate by using Colligos sythetic shrouds in part or whole to eliminate some of this.

I also intend to have the mast tapered to remove some of the weight high up. ...have good welders, engineers and machine shop working alongside me.

Does anyone have any thoughts on this or care to bounce around ideas with me?

Thanks in advance.