To be blunt, completely removing Lenin from the equation, although eliminating one of the titans of Russian Marxism, will not prevent the February Revolution or change the 1905 revolution. It may prevent the historical split of the RSDLP, but make no mistake, that split almost certainly will occur, the divisions within the party are just too great to be completely papered over, but the split itself will look quite different than OTL. I'm just spitballing, but I can see a fair number of OTL Bolsheviks splitting alongside people who were historically Mensheviks like Martov. I'm especially thinking of Kamanev and Zinoveiv here, since OTL they were perhaps the most "parlimentary" of the Bolsheviks. I still don't expect the Provisional Government to survive, on the eve of the October Revolution there was frantic political maneuvering by large numbers of even the "moderate" socialists who had henceforth backed it to force the PG to negotiate peace with the Germans, convene the Constituent Assembly as rapidly as possible, and immediately carry out large scale land reform. Historically this failed because a group of Bolshevik sailors seized the lines of communication literally two hours before this was decided. Even so, Martov almost succeeded in getting the 2nd Congress of Soviets to support a pan-socialist coalition before Lenin and Trotsky's arrival and the seizure of the Winter Palace changed the calculus and the mood. The Provisional Government is therefore probably fucked no matter what, because Lenin had little impact on the fundamental conditions which rapidly transformed the Bolsheviks from a minority into a plurality, and one with disproportional support from the soldiers. Lenin or no the incompetence of Russian liberals and dogmatism of the Right-SRs and Right-Mensheviks are going to create a political climate in which their unelected government cannot survive.
I think the third option in the OP is interesting though, because it wouldn't remove Lenin from radical politics, just reduce his relative importance. One of the founders of Russia's first Marxist/Social Democratic organization was a woman who murdered a tsarist official and convinced her jury to acquit her. Kollontai, who is my current avatar, was a prominent Bolshevik and one of the leaders of the Workers' Opposition. Maria Spiridonova was perhaps the most famous Left-Socialist Revolitionary and a celebrated terrorist. So clearly women could and did participate prominently in radical politics, albeit at substantially lower rates among the higher echelons. I'm actually not sure what the result would be to be honest.
TL;DR Lenin was important, but his importance is overexaggerated even by his detractors partially thanks to the Soviet Lenin cult, and partially due to Great Man Theory.
